Rivet setting machine



p 1943- c. [-L LYON 2,328,821

' RIV'ET SETTING MACHINE Filed March 17, 1941 5 Sheets-Sheet 1 INVENTOR.

c2400; hf u o/v BY M4. 7%

Sept. 7, 1943. c LYON 2,328,821 r RIVET SETTING MACHINE Filed March 17, 1941 5 Sheets-Sheet 2 [QT n;

1 INVENTOR. 6414005 16! LVO/V Fwd/Q \ZJ L P 1943- 1 c. H. LYON 2,328,821

RIVET SETTING MACHINE Filed March 17. 1941 5 Sheets-Sheet 4 INVENTOR. 6246/05 H Ara/v Sept. 7,, 1943. c. H. LYON 2,328,821

RIVET SETTING MACHINE Filed March 17, 1941 r 5 s t sh t 5 mvENTo F74 /'5 (4,4005 hf L/ O/V Figure 3;

4 94 ofFigureZ;

rivet feeding v mechanism;

it Figure 15 is a cross-sectional view of Patented Sept 7, 1943 I UNITED STATES PATENT- O F v l c c (2,328,821;

i SETTING ncnrnn y g Claude H. Lyon, Lansing, Mich, assignor'to Mo- 1 tor Wheel Corporation, Lansing, Mich, a cor- V poration ofMichigan Application March 17, 194i, Serial'No; 383,762

This invention relates to-rivetsetting machines i i and more particularly to the rivet feeding and driving mechanisms thereof. t The principalobject o'f the inventionis} to pro "Another-object is the provision of mechanism for automaticallystopping-the machine if the feeding mechanism shouldy forany reayon' cease to function.-

following specification whenfread in connection with the accompanying-drawings, wherein- *Figure 1 is a front elevational view' of a rivet setting machine embodying theinvention; Figure 2 is a cross-sectional viewofthe-punch 4 assembly taken on substantially the line 2+2 of Figured; is a bottomplan view of :the'punch assembly;

Figure liis a crossesectionalview ofwthe punch guide assembly taken ,Q substantially the line Figure 5 isa rearjelev movable capshown in Figure 4;

tional view'of; the ref "Figure 7 a cross-sectionalview s tantially the line 1 of Figure 6; i Figure 81 is a'crosssectional viewof the punch and punch adjustingmechanism taken A on substantially the line ii- 80f Figure 9; Y

taken on sub Figure 6 isazcross-sectional vie'wfcf theipunch \guide sleeve, clie'button, and a portion of the For, the purpose of facilitating the disclosure ofthe invention, the description will be divided machine."

into five parts, relating to the press proper, the punch assemblypthe rivet feeding mechanism,

the safety mechanism, and the operation of the h -pr ss block 4 issrigidly mounted on the frame I; (See Figs. 1, 11, 12 and 13.) The die block has avertically-extendir g bore 5 therethroughfora purl "These objects 'willbecome moreapparentin'the" Figure 9 is a cross-sectional viewtaken on sub-j Figures 1'10, 11; mass 13 are fragmentarycross sectional views similar to Figure "2 showing the partsof the punch a ssemblyin different positions during its cycle of operation;-

Figure 14 is a cross-sectional view: rim showing a rivet in place and the sembly in broken lines; and

of a, wheel as-I wheel after the rivet has been headed over. 1 The machine disclosed herein isfdesigned to driveTcylindrical unheaded rivetsf of the type in thesame posewhich will appear presently. t t 5- A-pair ofasupports 3'is mounted on the frame I, below; and-onopposite sides of the ;die block 4. The supports are capable of limited vertical movement and are biased toward their upper poing the rim in the position shown in broken lines in Figure 1. The wheel is thus permitted to turn freely when so supported, but can be forced downwardly against the dieblock 4 when the ram (to "be described later) contacts the wheel rim;

Journaled in bearings at the top of-the frame is; a crankshaft 6.- on one-end of which is a flywheel 1L A ram 8 is connected to the crankshaft for; vertical reciprocation as the crankshaft turns i The crankshaft is driven from an electric motor through a driving connection includinga clutch Ordinarily the motor for-driving the ram-operates continuously; but the ram itself can be started-andrstopped at Will-by the operator. The

clutch. 9 isroperated by a pneumatic trip I 0.1 The latter comprises a cylinder having apistontherein and'a piston rod H connected to-the clutch.-

Oppositeendsof the cylinder are connected to anair valve 12 which in turn isco-nnected to afsourceof'air under pressure. Mounted ontop of the valve isa rocker arm 13 for movingihe valve from one position to the other. The rocker arm is'rocked by a solenoid l4 connected af source of electric currentand inseries with a;

switch l5, The switch is actuated bya foot pedal linear the machine operators foot.

When the foot pedal is released the solenoid,

is deenergized and the valve rocker arm isbrought. to the position shown in Figurel Air is ad-1 mitted to theupper end of cylinder lilireleasing clutch ,9. When the pedal 18 is depressedbthe solenoid iszenergized, thereby operating the air valveftozadmit airrto the lowerendof the cylinder.,

This forces the piston rod upward and engages the clutch.

-!The punch. assembly in are two shoulder screws 49. The upper ends of the shoulder screws are enlarged as shown in Figure 2 to form seats for a pair of coil springs 20. The springs 29 are contained in spring housings 2|. to opposite sides of the ramil at points above the punch holder. The lower ends of the shoul- The housings 2| are-rigidly connected der screws I9 are threaded for attachment to a p punch guide assembly, which will be described later. twoguide pins 22. The guide pins are rigidly mounted in the punch holder and. project downwardly therefrom.

. In the center of the punch holder is a recess which receives a punch retainer 23 and an adjusting wedge 24. slightly shorter than the recess to permit fore and aft movement of the wedge. The ends 25 of the wedge are threaded. They project through the front and rear walls of the recess and are provided with nuts 26 to provide for adjustment of the wedge.

The punch retainer 23 has an inclined tcp surface that cooperates with the lower surface of thelwedge, whereby fore or aft adjustment of the wedge produces an up or down adjustment of the punch retainer. A screw 21 threaded into the pinion holder locksthe punch retainer tightly in its adjusted position.

I the lower face of the punch retainer is a bayonet type-recess 32. 'See Figures 8 and 9. At the rear of the slot are shoulders 33 to hold a punch 28. I j The punch ,28 has a head 29 which fits within the bayonet slot 32 in the bottom of the punch retainer. The central part 39 of the punch is smaller than the headQbut of a diameter sufiicient'to provide the necessary strength. The lower end of the punch 28 is reduced in diameter as at 3|. The diameter of this portion is the same as that of the rivets I99. A recess 34 is provided in the punch holder at one side of the punch retainer 23. The purpose of this recess will appear presently.

" Below the punch holder l! is the punch guide assembly. The punch guide assembly comprises a body portion 35 which is attached to the threaded ends of the shoulder screws I9 and is movable therewith. Intermediate'the center and the respective ends of the body portion 35 is'a pair of guide pin bushings 36 which receive the guide pins 22 on the punch'holder H. The guide pins 22 are slidably mounted in said bushings.

1 Inthe front surface of the body portion 35'is a generally rectangular recess 3'! which receives a removable cap 38 (see Figures 3, 4 and 5). The front wall of the recess 31 and the adjacent or rear wall of the cap 38 are hollowed out to receive a punch guide sleeve 39, a die button 49, and

I certain parts of the rivet feeding mechanism,

The punch guide sleeve 39 above mentioned'has. a bore 42 extending. therethorugh to-receive the punch 28. The upper part of this bore is large Intermediate the shoulder screws l9 are The adjusting wedge-24 is i "side of the bore 42 (see Figures 2, 5 and 7).

the outside of the sleeve 39 are two shoulders 45 enough to slidably receive the enlarged portion 39 of the punch 28 while the lower end of the bore slidably receives the reduced lower end portion 3| of the punch. Extending radially through the side of the punch guide sleeve 39 adjacent the lower end thereof is a rectangular slot 43. The dimensions of the slot are such as to permit the radial insertion into the bore 42 of the rivets I09. A small hole 44 extends into the punch guide sleeve from the front thereof and intersects the slot 43. The hole 44 is tangent to the left hand On which fit corresponding recesses in the body porgtiorr 35 and the cap 38 to accurately locate the 1 punchguide sleeve 39.

Directly below the sleeve 39 and aligned therewith is the die button 40. This die button is composed of two parts, a casing 46 of tough stress resisting steel to prevent bursting of the button, and a bushing 4'! of veryhard steel to minimize wear. These two parts are fitted together with a drive fit. The bushing 41 has a bore extending vertically therethrough, which is aligned with the bore 42 in the punch guide sleeve 39. The lower end of the bushing 41 is in the form of a trun cated cone. It projects slightly below the lower end of the casing 46. The casing 43 has a peripheral shoulder 48 which locates and holds the die button in place in the punch guide assembly.

The cap 38 above mentioned is provided with a small hole 4 9 aligned with the hole 64 in the punch guide sleeve. Received in this hole is a rivet retaining pin 59 which projects nearly half way through the punch guide sleeve 39 (see Figure 4). The inner end of the pin 50 is rounded. The pin 50 is held in place by means of a short leaf spring 5| attached to the front of the cap 38 by a screw 52. The spring 5| permits the pin 59 to be pushed partway out of the hole 44 in the punch guide sleeve 39.

In the lower face of the body portion is a rectangular recess 53, the purpose of which will presently appear.

The rivet feeding mechanism Mounted on the frame I at the upper end thereof is a rivet hopper 5! adapted to contain a quantity of loose unh'eade'd rivets N10. The hopper 54 is connected to a rivet feed tube comprising four sections, 5 5, 56, 5! and 58. The section 55 is' firmly secured to the hopper. Section 56 is hinged to section 55. Section 51. is hinged to section 56 and to they punch guide assembly. Section 58 is immovably mounted in the punch guide assembly between the body portion 35 and the cap 38 (see Figure 2').

The hinges between the various sections of the rivet feed tube are nearly alike and only one will be described in detail. That one is the connection betwen the sections 5'! and 58. The lower end of the section 57 hasa pair of oppositely.

extending cylindrical projections 59. These pro-1 jections fit within'circular recesses 69 in the body portion 35 and thecap 3B and are rotatable to a limited extent therein. The upper end of the section 53 is oppositely beveled as at 3| to permit limited rocking movement of the section 5'! relative to the section 58.

The other hinged connections between the sections are the same as that just described except that the recesses for receiving the projections on the sections of the feed tube are formed in housings 62. Each housing is made in two halves held together by bolts 63.

the frame. l. of the opened;

. Figures 1, 2, 1o,;.11, 12-and:13. A

r theparts are in the posit-ionsshovvn in Figures},-

. 2.. and Theramland punchassemblyfareg in.

their. uppermost positions with thepuneh-holder, Y H and punch guide assembly separated by-thehas its lower end cutaway; at? azvery acuteangite of; the'frivet; feed; bar, .lzwhich described later. 1' Thel-openelowenendnofr theseetion .58 combmunieates. Withr. theTj1Smt.,.43 the side ;of, the

punclnguidesleeve 3920.; "7" .1

:11' Shdahlymountedin opposite wallsoi thqrecess Sinisga rivet. feed-3 bar 65.1; jIhez ri ht handend,

(Figured) .of theyrivetieeda barrisreduced in sectionas at; as; to permitit. toenter; the si ot 4- inzthe section fifiiof-t-he rivet1feeditube.-- Aspring.

" surrounds: the fivet fee deban. $5 and is. held incompression by a pir i 681 extending through the i rivet feed ban. 1 This springurges -the, feed bar fii I .totheleft as-shownin-Figurez 1-; ,,A,feed than operating; lever (:19pivoted. at l-fl on; the lefthancl endyof' the bodyg portion /01 the punchlguide assenihly 'lhe lower endsoi the.

lever" 69 bears against. the 'adjacent jend-offlthe f eed ban 65 e -A roller: H is, rotatably nounted on theoperating'lever between the-ends ofth e.

Y feed camq'i-l ispivetaliy ni eunted atMunQn press. The lower end o the feed cam F2 is beveled as at M. V; i k A release leverli intheform .oha hell cranhas l pivotallymounted at. 15 on. the frame. I, 1 A linl;

Tl. made up of two telesgoping Setiblls i D -V:

position until just before the die; button-strikes the which has beenwheld in=theposition shown; in

' Rigurem-bythe verticalface ofithesfeedmamh;

pressed rivet retaining pinjfl-gl is permitteddomovetothe leftialong' gthe inclmed; face M of the-cam. The spring 61 retracts the rivfi trfeed bar and" permits a rivet 100* in: the feedwtube to-,drop down into its position-shew in -.Figu-re-11'. It: isheld in that POSifiOlI'bYihE walls; of the feed'tube section; 5&1and': the spring:

1 The punch assembly in its it entirety; continues to :move down. until-the hardened bushing Q1 in the diebuttorr 40' strikes. the .top: surface of the work anduthusstops. thepunch guide assembly; However theragn it and the; punch holder ,l-I; continues to move downward; against. the; action oi. the springs 20. -"I'he.- punch ngcontacts the rivetJ-M in. the punch guide sleeve. forcingthe rivet out of the sleeve throughthe didbuttom and eventually through the .work. itself (see Figure l2');.-. Thelower end of. the rivet formsla hole ferpitself in the .work by shearing. out slugs and then; enters the bore.5 in the die-bloclgpush ing the} slugs ahead;- of it. The. slugs jalljonr.

through the bore 5; I

. o f- -the body 350i the punch guide asseinbly as otallyconnected,at;its.lopposite endseto. the re leaseieverl fiand the teedzcamlz. A coil spr ng 'lfl surrounds the lihk-Ulandjactsttd pressfthe feedlcani towardfthegpunch] assembly.

This

snringll'lfl. is; considerably stiffer. than the spring 6T. surrounding the feed. bar 65.; Thegmovement. of, the feed cam. 12' toviar'dfthe. punch.assembly J due to the sp in is limitediby an adjustable the re1'ease1l'ever. 15in a1 counter-clockwise direc-r The1 safety-mechdnism' I Q safety mechanism comprises: asafty: switeh fllhmounted on the frame- I and connected in se'ries the solenoid I4 1 and'operatmg v switch jli. Switch BOQ nOrmaIIyLiS-m closed;

. Threadedintothe-feed cafi1=12flisabo1t8l which; i bears against' the". switch flhwhereby movement I of the-bolt toithe left (Fig. I) will open th'e'j switch; A'safety'=cam-82 is attached to the sid'e: ot the: feed camadj'acent the feect baroperating LII thesafety switch 8itis openedby pre'ssureof the bolt 8 the clutch: i's-thrown out in the same manner as i is' the case Operation of the machine T i springs 20 acting onthe shoulderscrewsflh. gThe' i causing the feedjbar65jto'bebroughtihtdcontaet the switch; Ii is shown in Figure 12, the entire punch assemblu isv pressed down still farther fora short distance, forcing the conical. end; of the hardenedsleeve .41

into the-l metal of the work. .f(See,Figure 13.)

That flows. the metal of the work. against the sides of therivet'therein, securing. the rivetgin place. Atithesame time it forms. a cavity inthe' tep surface. ofl'the work. to receive. the metal of the upper end of. the rivet when it is later: headed" over (Fi ure 15) V a n w and the springs 21!, separatethejpunch holder H m t ebod' 3 41 e unch uid as embly;

holdingthe Iatteragainst thel work until the ,iiunchhblderstrikes thejheads r the shoulder screws, lBy that time the punch has been withf drawnifrorn the diebutto n up into the sleeve tqa point 3501 6151181 slot 43'. PresentlytherolIer' witl r thebottomfirivet win the feed tube and then push the rivet out of the feed tube past the rivet retaining pin :59 intothe punchguide sleeve39z' (See Figure 10-); This rivet is held its nextcycle of operation. i i Aftera suitable number of rivets have beem', driven intothelworkthe latter is removed and transferred to. another "machine wh'ere the ends.

ofth e-rivetsarefheadediover; 'I'hisis a' purely conventional pressing 3 operation and is shown-in? ni'gurer5qrr1s more fully described my aforementioneddepending application-Q a if; duringlthe cycle or o eration above: se

scribed; the punch holder l'lian'dl body'3'5 ofthe punch g uidefassernbli should stick or-{jamso i that they do notseparateas described, the safety mechanisn cor'ne into play. Assuming that-'the inland there is one giivet in the; borein thepunch guide,sleeve39;(see.Figure 109 1 i i thefootfpedah It, causing the clutchduo-engage whereuponthe ram 8'starts down wardly. All of;

the pa ts -ctf he nemh w m r m in in thi The operatorstarts the machine by depressing:

parts do stick, the'feed bar fi5 will beprevente'd from moving completely through the slots and Elfin thefeed tube and-sleeve 3'? by'thebresence in the; latter-80f thepunch 28; The roller-will then? ordinarily force: the feed. camlrto'the-lefta .againsttthe actionpf the spring. 6:1 whereby toil caus-elther screws 8 I .to. .triprthe switch .80 and stop themachine. .If-this does not occur whenthe;

roller?! a s- .s rtace.M t-wfll c rtat m starts, fits upward. movement" place'by the'pin' 50 until the ra n 8- starts down? appen ed claims.

ocqur when theroller reaches the safety cam" 82. Thus, there is jrio possibility of the machine continuin vidtlrr tlie fpartsjammed; I

Occasionally an abnormally short rivet will g ti'ntctn reed tube. When this occurs the feed ba 65;wil 1"s trile the rivet' next above the bottom rivet in' the feed tube and will be prevented from moving the bottom rivet into the sleeve 39; The roller li'will again be locked against movemnt ar'id'willpush the feed cam 12 to the left and stop the machine.

I nterns; ca e the machine'cannot be started again until the jam has been remedied. It is a is matter to overcome this difiiculty. The

lever'lfi is" rotated counter clockwise to relieve the The scop e of the invention is indicated in the gflIfclaim: V w I s Y v A rivet setting machine comprising a ram,

, a secured thereto, a punch guide assembly slidabl yconnected to said ram, said punch guide assembly having a bore therethrough slidably receiving said punch, a rivet feed tube in said 'assemblyhaving one end communicating with said bore between the extreme positions of punch movementa rivet feed bar mountedon said assembly fforf reciprocatory movement transverselyfof ,the axis of said bore at the end of said" rivet feed tube, a die button having a bore there'throug h axially aligned with said first namedboreto receive a rivet when such rivet is a'tedu'pon bysaid punch, and means at one sid'iof'the bore in the punch assembly friction allyengaging arivet in said bore to hold said rivet 'until acted uponby said punch.

A riyet setting machine comprising a ram, apunch secured thereto, a punch guide assembly .slidably connected to said ram, said punch guide assembly having abore therethrough slid- "ably receiving said punch, a rivet feed tube'in said assembly havingone end communicating withsaid bore between theextremepositions of punch, movement, -v arivet feed bar mounted on said assembly-for reciprocatory movement transversely of the axis of said bore at the end of said rivet feed tube, a die button having a bore therethrough axially aligned with said-first named bore to receive arrivet when such rivet is acted upon by said punch, and a spring pressed rivet holderbetween said bore and the end of thefeed tube tohold the rivets against movement therein.

; 3 A rivet setting machinecomprising a ram, a

punch, secured thereto for movement therewith,-

apunch guide slidably'connected to said ram and having: a-bore therethrough receiving said punch, arivetfeed tube communicating at one end with said bore, a rivet feed barmounted on said punch guide for'reciprocatory movement transversely of the axis-of said'bore, cam actuated mechanism engaging an'end of said feed bar for moving; thelatter toward said bore, and means actuatable by said cam actuated *mechanism for stopping I ing a rivet into said bore in front of said punch at'each stroke of the ram including a rivetrfeed barmounted on said punch guide for reciprocation'relative thereto, and means on said frame engaging said rivet feeding mechanism for stop ping the operation of the rivet setting machine upon jamming of the rivet feed bar. I i

5. A rivet setting machine comprisinga frame, a ram mounted thereon for reciprocation relative thereto, a punch mounted on said ram for movement therewith, a punch guide slidably mounted on said ram,-said punch guide having a bore therethrough slidably receiving said punch, mechanism for feeding rivets into the bore ahead of said punch, and means on said frame engageable with means on said punch guide for stopping the operation of the rivet setting machine upon failure of said punch guide to slide relative to said ram.

6,. In a rivet setting machine, a punch guide assembly comprising a body portion having a recess in a vertical face thereof, a punch guide sleeve having a bore therethrough mounted in said recess, a rivet feed tube having a portion thereof in said recess and having one end thereof communicating with said bore, a cap seated in said recess cooperating with said body portion for-holding said punch guide and feed tube in said punch guide assembly, and means removably securing said cap to said body portion. a

7. The combination defined in claim 6 wherein the means for securing the cap to the body por tion comprises a single screw accessible from the front, of the assembly.

8. A rivet setting machine comprising a ram, a punch secured thereto, a punch guide assembly slidably connected to said ram, said punch guide assembly having a bore therethrough slidabl receiving said punch, 'a'rivet feedtube in said asconstructed and arranged to receive between them sembly havingone end communicating'with said bore between" the extreme positions of punch movement, means in said punch guide assembly at one side of said bore for releasably holding a rivet therein, a rivet feed; bar mounted on said assembly for reciprocatorymovement transversely of-the axis of said bore at the end of said rivet feed tube, and a die button having a bore therethrough axially aligned with said first named bore to receive a rivet when such rivet is acted upon by said punch;

J 9. In a rivet setting machine: a punch guide assembly comprising a body portion; a removable cap therefor; said body portion and cap being and hold in operative relationship a punch guide sleeve, a portion of a rivet feed tube, and a die button; and means removably securing said cap to saidbody portion. a

Q10 A rivet setting machine as defined in claim 9 wherein the means for securing the cap to the body portion comprises a single screw accessible from the front of the assembly v 1 1. A rivet setting machine as defined in claim 9 wherein said body portion and cap are provided with complementary recesses receiving said punch guide-sleeve, rivet feed tube, and die button.

'12. In a rivet settingmachine: a punch guide portion a 13; ill rivet setting comprising aframe,

punch guide assembly reciprocably mounted. on

lpunch guide 1 assembly comprisinga cam movmachine.

lower on the punch guide assembly, saidicam ing out of the normal path ofmovement of the a ram reciprocably mounted on the "frame, a1

'14.] A rivet setting machine comprising a a a a rarn reciprocably mounted thereon," a punch ,guide assembly reciprocably mounted on said ram, a i a. cam ab m u ted onjthe frame sna e cam V amfollower and adapted to' befengaged-by the *cam followerwhen the punch guide assembly is e \held against movementfin one of its position; rel

ative to the rarn,fian'd' meansactuat'ed upon a t e 2,328,821 assembly comprising a body portion; a "removable I cap therefor; said body portion and cap being i constructed and arranged to receive between i them and hold in operative relationship apunchqi ,guidesleeve and aportion oia rivet feed: tube; e e d l and means removably securing said cap to said i guide assembly including' a diebutton removably 1 a 1 secured thereto, said 'die buttonconsisting of a;

a stress resistant casing and an abrasion resistant" he ram, mechanism foriieeding rivetsinto the ablymounted on the frameand a cam mnowerp .pnthe punch guide assembly, spring meansflonfl said frame normally immobilizing said calm but permitting movement thereof when lthe cain foli ower is immobilized relative to the punch guide assembly, and means actuated upon axpredetermined movement of the cam relative jto the frame pfor stopping the operation-.orthe rivet setting beingaxially aligned therewith.

ing end of the casing;

i pf thepunch guide assembly.

l5. A rivet setting machine com arising a ram, a punch secured thereto, a punch guide assembly slidably.,connected toflsaidram, said punch sleeve in saidcasing, "said sleeve having a bore therethrbugh adapted to receivesaid punch and 16. A rivets ttingmachine asdefinedlinjelaim 15 wherein the end ofsaid sleeve 'remotelfrom the ram projects axially beyond thecorrespond- 15,

17. A rivet setting machine H ciprocable ram, a punch, means on said ramsecuring said punch thereto, saidmeans holding said. punch against movement ofj thelatter in the direction of reciprocation of said ram but permitting release of said punch from the ram by lateral movement of the punch relative to the J ram, afpuncnguide assembly connected to' the l ram for, movementin the direction of reciprocation oi the" ram, said assembly comprising a body 7 'portionand aremovable"capreceivingsaid punch i between; them, snidficap being removable from said bodyportion in a lateral direction whereby to permit releasing of sai'd punch from the ram when the cap is removed from the body portion i CLAUDE LY i predetermined movement-l'of the cam for stopping the operation of the rivet setting machine. a I

comprising a re g 

